Soft colloidal interactions in colloidal glasses are modeled using suspensions of multiarm star polymers. Using a preshearing protocol that ensures a reproducible initial state ("rejuvenation" of the system), we report here the evolution of the flow curve from monotonically increasing to one dominated by a stress plateau, demonstrating a corresponding shear-banded state. Phenomenological understanding is provided through a scalar model that describes the free-energy landscape.
|Original language||English (US)|
|Journal||Physical review letters|
|State||Published - Mar 28 2008|
ASJC Scopus subject areas
- Physics and Astronomy(all)